@article{a062ddc4dcf34620a534d93b9794f295,
title = "Photocaged Competitor Guests: A General Approach Toward Light-Activated Cargo Release From Cucurbiturils",
abstract = "A general approach toward the light-induced guest release from cucurbit[7]uril by means of a photoactivatable competitor was devised. An o-nitrobenzyl-caged competitor is photolyzed to generate a competitive guest that can displace cargo from the host macrocycle solely based on considerations of chemical equilibrium. With this method the release of terpene guests from inclusion complexes with cucurbit[7]uril was demonstrated. The binding of the herein investigated terpenes, all being lead fragrant components in essential oils, has been characterized for the first time. They feature binding constants of up to 108 L mol−1 and a high differential binding selectivity (spanning four orders of magnitude for the binding constants for the particular set of terpenes). By fine-tuning the photoactivatable competitor guest, selective and also sequential release of the terpenes was achieved.",
keywords = "chemical release, cucurbiturils, photochemistry, supramolecular chemistry, terpenes",
author = "Romero, {Miguel A.} and Nuno Bas{\'i}lio and Moro, {Artur J.} and Mara Domingues and Gonz{\'a}lez-Delgado, {Jos{\'e} A.} and Arteaga, {Jes{\'u}s F.} and Uwe Pischel",
note = "sem pdf conforme despacho. Spanish MINECO (CTQ2011-28390 and CTQ2014-54729-C2-1-P for U.P.), ERDF, the Junta de Andalucia (P12-FQM-2140 for U.P. and PhD contract for M.A.R.), and the Associated Laboratory for Sustainable Chemistry-Clean Processes and Technologies-LAQV is acknowledged. The latter is financed by national funds from FCT/MEC (UID/QUI/50006/2013) and co-financed by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265). The Portuguese FCT/MEC is also acknowledged through the National Portuguese NMR Network (RECI/BBB-BQB/0230/2012). N.B. and A.J.M. are recipients of FCT postdoctoral grants (SFRH/BPD/84805/2012 and SFRH/BPD/69210/2010). We are grateful to Dr. S. Pauleta (Lisbon) for providing access to the ITC equipment (FCT-ANR/BBB-MET/0023/2012) ",
year = "2017",
month = jan,
day = "1",
doi = "10.1002/chem.201702185",
language = "English",
volume = "23",
pages = "13105--13111",
journal = "Chemistry - A European Journal",
issn = "1521-3765",
publisher = "Wiley-VCH Verlag Berlin",
number = "53",
}